linux-kernel - Re: 3.0+ NFS issues

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 31 May 2012 12:59:31 +0000
From:	"Myklebust, Trond" <Trond.Myklebust@...app.com>
To:	Michael Tokarev <mjt@....msk.ru>
CC:	"J. Bruce Fields" <bfields@...ldses.org>,
	"linux-nfs@...r.kernel.org" <linux-nfs@...r.kernel.org>,
	Linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: 3.0+ NFS issues

On Thu, 2012-05-31 at 10:47 +0400, Michael Tokarev wrote:

> 10:38:53.827355 IP (tos 0x0, ttl 64, id 35160, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1396548098 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827379 IP (tos 0x0, ttl 64, id 35161, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1413325314 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827385 IP (tos 0x0, ttl 64, id 35162, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1430102530 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827400 IP (tos 0x0, ttl 64, id 35163, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1446879746 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827406 IP (tos 0x0, ttl 64, id 35164, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1463656962 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827409 IP (tos 0x0, ttl 64, id 35165, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1480434178 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827413 IP (tos 0x0, ttl 64, id 35166, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1497211394 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827417 IP (tos 0x0, ttl 64, id 35167, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1513988610 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827420 IP (tos 0x0, ttl 64, id 35168, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1530765826 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827424 IP (tos 0x0, ttl 64, id 35169, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1547543042 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827427 IP (tos 0x0, ttl 64, id 35170, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1564320258 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827434 IP (tos 0x0, ttl 64, id 35171, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1581097474 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827438 IP (tos 0x0, ttl 64, id 35172, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1597874690 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827443 IP (tos 0x0, ttl 64, id 35173, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1614651906 > 192.168.88.4.2049: 212 getattr fh 0,0/22
> 10:38:53.827447 IP (tos 0x0, ttl 64, id 35174, offset 0, flags [DF], proto TCP (6), length 268)
>     192.168.88.2.1631429122 > 192.168.88.4.2049: 212 getattr fh 0,0/22

That is tcpdump trying to interpret your NFSv4 trace as NFSv2/v3.

Can you either please use wireshark to provide a full text dump (using
something like 'tshark -V -O nfs,rpc'), or just send us the binary
tcpdump output using 'tcpdump -w /tmp/foo -s 90000'?

> >> Can at least the client be made interruptible?  Mounting with
> >> -o intr,soft makes no visible difference...
> 
> please? :)

It already is interruptible: try 'kill -9' or any other fatal signal.

-- 
Trond Myklebust
Linux NFS client maintainer

NetApp
Trond.Myklebust@...app.com
www.netapp.com